Metal vs Stock AFM Pipe

[rev210]

My advice on filter selection is to spend very little money on it.

$100 is about all you should spend. The K&N panel element works well enough.

The factory paper filter flows ok when clean. The 'real' difference in power is SFA. If you feel good about spending $400 for a maximum of 2-3hp at the engine knock yourself out.

[SeriesIIGTST]

Rev, if i had the stock airbox, i'd probably go back to it and put on a K&N filter but I don't. Car came with a pod so that's my only option. I currently have on a WorksAuto pod which people tell me is decent enough...just wondering it is causing a restriction cause it was a cheapie...

[redline2003]

i think a properly set up pod(apexi, k and n) in a heat shield box with rubber insulation and a cold air feed will net a fair bit more the 2-3HP at the wheels, this has been dyno proven too by various workshops, its generally a 5% increase in KW

[rev210]

redline2003,

you'd think that but you'd be wrong. Dynos don't simulate the airflow whislt driving along blah blah blah.

It's generally not 5%

It's generally less than the error margin %.

[Sydneykid]

redline2003,

you'd think that but you'd be wrong. Dynos don't simulate the airflow whislt driving along blah blah blah.  

It's generally not 5%  

It's generally less than the error margin %.

Best I have ever seen, was a repeatable 6 rwkw.

[redline2003]

on a road car, there is no real other choice, a straight pipe to the front of the car or a huge bell mouth in the engine bay would not be for the street for obvious reasons, unless u wanted to replace ur turbo/cooler/plenum etc every 6 months. stock airbox doesnt do it for me either as it was designed for use with the stock engine and not much more, similar to the stock intercooler and exhaust, sure the airbox is functional with higher power, but u would get more gains out of a pod+custom box+cai(more surface area, more flow, less restrictive box and cai). some workshops and development houses claim a pod alone netted them 10kw at the wheels, that i do not believe for a second

[rs73]

My advice on filter selection is to spend very little money on it.

$100 is about all you should spend. The K&N panel element works well enough.

The factory paper filter flows ok when clean. The 'real' difference in power is SFA. If you feel good about spending $400 for a maximum of 2-3hp at the engine knock yourself out.

I can't be justified to spend that much too for a pod setup just to gain little power. So I'd go with a paper Apexi panel filter. Not sure how many % better airflow compared to stock paper filter, but it's definitely less than $100 to spend like you said.

There's a website somewhere that did comparison and showed the Apexi pod version has better filtration yet still has excellent airflow. HKS pod with its green foam material was worse as far as I remember (higher flow but filtration not good - small dust particles gets thru).

As the Apexi panel & pod filter both uses the same red paper material, I'd suppose the panel version I bought would be quite good for the street.

[EnricoPalazzo]

yeh that article is an oldie from supra forums i believe.

[rev210]

I'd go a K&N or a pipercross filter over the apexi , since they can be reused and cleaned properly.

[EnricoPalazzo]

apexi can also be re-used.